The Nov. 1 date marks the end of a year-long grace period that airlines had to clear out reservations made prior to Secure Flight’s Oct. 29, 2009, implementation date. Under Secure Flight, TSA prescreens passenger name, date of birth and gender against government watch-lists for domestic and international flights. In addition to facilitating secure travel for all passengers, the program helps prevent the miss-identification of passengers who have names similar to individuals on government watch-lists, TSA said. Before Secure Flight, airlines conducted passenger watch-list checking.